Joint galvanized genuine excellent price

Excellent price genuine joint galvanized sheet galvanized sheet galvanized sheet main application uses industry: a large galvanized sheet materials used in automobile manufacturing, refrigerated containers, construction, ventilation and heating facilities and furniture manufacturing. Galvanized steel has become an important method for preserving, not only because zinc may form a dense protective layer in the steel surface, but also because zinc has a cathodic protection effect, when the zinc coating is damaged, it can still be prevented through cathodic protection iron masterbatch corrosion material construction industry: roof, roof structure, balcony panels, sills, kiosks, warehouses, roller shutter doors, heating, water pipes and other household appliances: refrigerators, washing machines, switchgear, air conditioning, microwave ovens, bread, copiers, vending cargo aircraft, electric fans, vacuum cleaners and other furniture industry: lampshade, wardrobe, desk, shelves, counters, signs, medical equipment, and other transportation industries: automobile ceiling, car shell, car plates, tractors, trams, containers, highway fence, ships bulkhead plate and other aspects: the instrument shell, trash, billboards, watches, photographic equipment, gauges and other color-coated steel is hot galvanized plate, hot galvanized plate, galvanized sheet as the substrate, the surface preparation. In recent years, the application field of painted steel gradually expanded, increasing market demand, the industry research on the construction steel market conditions, that the future of China's construction industry demand for color coated steel sheet will increase significantly Only there are 37 Olympic sports venue construction projects in the six years to complete the new 22, renovation and refurbishment of 15 existing venues, lots of roof, and all kinds of roofs are required shaped painted steel. According to statistics, from 1983 to 1997 in five years, the domestic market demand growth rate of painted steel about 8% of the total consumption of 11.5 million tons, which is used in the construction industry accounted for 63.5%, totaling 7.3 million tons about the equivalent of 180 million square meters building area. Predict the next 10 years, pre-painted steel demand in the domestic market will be the annual growth rate of 10% growth, then in the construction field painted steel consumption will double to more than 15 million tons, about 4 billion construction area. 2, 2004, painted market this year, China's color-coated market generally favorable, resources are more scarce, it is because color-coated market scarcity of resources throughout the international market, the price continued to rise, the current international market reach caitu $ 880 / ton, compared with the previous period increased by nearly $ 200 / ton, its impact, import prices also rising Chinese market. As the previous stage, painted in the domestic market price has risen to 7300 yuan / ton, painted board also 6950-6850 yuan / ton. Resources from the market point of view, the current domestic high-grade color coating production capacity is limited, mostly in the new low-order products, and domestic caitu varying quality, can not meet the market demand. In 2003, China caitu consumption reached 2.54 million tons, an increase of 36.49% over the previous year. Although this year's color coated production capacity in China continued to expand, such as last year's rise in domestic yields up to 1.455 million tons of color coated, up 89.44%, but still can not meet these new products market growing demand, particularly Some high-end products. Last year, China imported 1.1 million tons. This year, China's color-coated prices gaining momentum, is expected to continue to call in April and May, there is likely to rise to $ 900 / ton. As a result, some companies engaged in import and export trade caitu are afraid to take orders, it will reduce the number of the next few months, foreign resources to enter the Chinese market, which is the Chinese color-coated market bullish, tight resources, A major factor in the high price to go. Market prices of raw materials, supporting the market price of color-coated high. For example, pre-painted board price changes directly affect the color coated coil prices. In general, pre-painted steel coil and galvanized sheet spread at least 600 yuan / ton, and some reached 800-1000 yuan / ton, which include paint, processing costs. But HDG prices rose a larger, lower than the color coated coil only about 300 yuan / ton. Therefore, investors if galvanized coil prices do not fall, there is a certain color coated price upside. In addition, Baosteel price adjustment magnitude and color-coated tactics played a leading role in the market. The prices in the second quarter, all of the color-coated breeds generally increase 400 yuan / ton; TS280GD (TSTE28) steels increase of 100 yuan / ton; TS350GD (TSTE34) steel fare is $ 200; thickness ≥0.7mm product again raised 100 yuan / ton. This increase marginally, compared to only half of the international market with the international market, gains. It should be said, Baosteel's price is very strategy, with a strong guiding role. The rate increases will effectively stop foreign products to enter the Chinese market, price stability in the domestic market will have a positive impact. Wo Yi sales agent Baosteel color coated grades common grades for TST01, TDC51D, high-strength plate mainly TSTE28, TS280GD so on. The main difference between the two grades are used for the production line of the substrate is different. Baosteel 2030 Grade II crew painted galvanized substrate is TST01; Baosteel color coated grades three galvanized substrate 1550 units for TDC51D. Starting in April, Baosteel use the new grades: TST01 to TDC51D (RG); TDC51D (RW); outsourcing board grades for TST01. Other domestic manufacturers generally painted substrates for its brands SGCC. Problems 1. Although the largest amount of building materials galvanized substrate capacity is large, but the lack of smoothness without spangle galvanized steel coil and zinc alloy coated steel coil, good substrate; 2. domestic paint variety, quality can not be completely to meet the demand, higher prices of imported paints reduced competitiveness, film plastic film color plate required yet to rely on imports, the lack of a thick coating, functional, high strength, color rich upscale color-coated; 3.Product not standardized, causing serious waste of resources, capacity 40,000 tons / year or less too low capacity unit in product quality and environmental protection resources are problems; 4. excessive national new painted units, far exceeding the market demand, causing many painted Units operating rate is very low, or even stop. The building, the load capacity (wind load, snow load, construction workers and machinery), the span of the building, from design 憛 so dependent on the strength of steel, for construction and maintenance of structures painted Galvalume speaking, both foreign-related standards. If the United States ASTM653, ASTM792, Japan JISG3302, JISG3321, European EN10215, EN10147 and so on. Divided into categories according to steel CQ (general commercial grade), DQ (general stamping), HSS (high-strength structural steel), FH (full hard steel). Use different coating structure: 2/1: the back monolayer paint corrosion resistance, scratch resistance is poor, but with good adhesion, mainly used in sandwich panels; 2 / 1M: the back of the paint-resistant corrosion resistance, scratch resistance and moldability is good, with good adhesion, apply pressure with a single plate and sandwich. 2/2: double backside paint corrosion resistance, scratch resistance and moldability is good, mostly for single pressure plate, but poor adhesion, not for sandwich panels. Users are more concerned in the sales situation is tolerance. The same specifications as painted, painted a negative tolerance developed area larger than the positive tolerance, which can reduce costs. The actual thickness = painted NW /7.85/ thickness / width tolerances painted tolerance depends on the substrate. Because most of the current board factory painted uncertain, so its use depends on the specific circumstances of the substrate. Common objections quality color plate, what does? 1, the color difference between the phenomenon of color painted in the same batch. 2, loopholes in the painted roll open, positive or negative some galvanized surface size of sesame seeds. Domestic painted this problem occurs frequently. 3, after stripping color steel roll open a little rubbed, there will be paint off phenomenon. Show more tender baked paint. Or poor quality paint, poor adhesion. 4, the wrong side of the wrong side, curling is missing, such problems occurred mainly in the pre-painted Indian board. Mainly by India galvanized sheet production process decisions. Such color-coated for the production of corrugated board no problem, in for the production of sandwich panels, if the volume of high speed, there will be a bad time or technical deviation phenomenon. 5, scorched paint baking time is too long, the color yellow; changes in ambient temperature or the machine speed is not adjusted. Galvanized color coated galvanized difference with color plates of just different substrates. Galvanized sheet strength and paint color has nothing to do with its strength galvanized steel (substrate) with the same intensity, divided G300 Upjohn board (generally used for sandwich) and G550 high-strength plate (typically used for single watt) . Here to tell us about the knowledge of Galvalume: 1. 55% aluminum-zinc-plated steel (Galvalume) coating of 55% aluminum, 43.4% zinc and 1.6% consisting of silicon, introduced in the late 1960s by the United States Bethlehem Steel Research , began commercial production in 1972. The trade name GALVALUME. Plating bath temperature of about 620-680 degrees, plus silicon is to prevent iron - aluminum - zinc alloy layers grown brittle, mainly for roof, side walls, cars, home appliances and so on. 2. 5% aluminum-zinc-plated steel (Galfan) coating approximately by 5% aluminum, zinc and rare earth metal and a small amount (0.05%) of (cerium and lanthanum) was composed in 1982 by the Belgian and research and development into commercial production, the trade name GALFAN. Plating bath temperature of about 420-440 degrees, cerium and lanthanum to improve the quality of the coating surface. Production line process description? The entire production line using two two-bake process for production. Divided into: entrance, pre-treatment section, coating segment, export segment. ①, a reasonable volume of raw materials on the substrate after the car into the production line, through the uncoiler, entry looper, arriving before processing segment, pre-treatment section is divided into: cleaning tank, wash tank, hot water rinse tank on the 1st, the 2nd hot water rinse slot. ②, the cleaning tank is provided with a degreasing agent pretreatment solution alkaline. The temperature of liquid in the tank in about 60 ℃ ± 10 ℃, the steel strip reaches the cleaning tank, the tank was supplied to the circulation pump through the pipeline with a nozzle, the spray from the nozzle onto the strip, the strip coated on oil and dust cleaning, the strip through this section is about 7 seconds. ③, former strip line to the scrub tank, scrub too alkaline solution tank to reach this segment of the strip through the nozzle spray and scrub brush, oiled and residual dust on the strip for thorough cleansing After paragraph scrub steel surface has been very clean. ④, arrived on the 1st strip rinse water tank, storage tank is the result of desalinated water treatment, tank mounted in place the same nozzle cleaning tank, rinsing the surface of the steel, the steel strip surface residual lye washed away through the wringer rolls steel surface moisture squeezed. ⑤, before arriving on the 2nd line of hot strip rinse tank, the construction of this tank and on the 1st of hot water rinse tank just like, its main function is to strip rinse, so further cleaning strip surface for the back of the coat preparing the steel strip after the first treatment stage, reach of the coating section, this section of the main coater and the 2nd chemical dryer, of the coater, mainly in the passivation film strip roll coating a thin layer, increase paint adhesion to the steel strip, the steel strip after the arrival of the 2nd chemical coater dryer, the surface of the coated steel was dried. ⑥, of painted steel segment after arriving early painted sections, this section is mainly on the surface of the steel roller layer of primer, the main role is to increase the adhesion of the topcoat, primed steel roll after entering the 1st curing oven, on the surface of the cured paint strip, steel plate in the furnace temperature of about 220 ℃, back in the 1st curing oven equipped with a cooling device, to strip out from the curing oven to cool deal so the strip surface temperature drops of about 40 ℃. ⑦, from the 1st solidified strip out of the furnace into the fine coater, this procedure is mainly carried out on the strip and roll back topcoat paint, roller coating play after entering the 2nd curing oven, on the surface of the strip paint curing, behind the furnace equipped with a cooling system to face the same treatment from the furnace to cool out of the strip surface. ⑧, strip through the examination room to reach the coiler, coiling machine finished coiling, winding to a certain weight were unloading volume operation, with the coil of the coil to remove the car, transported to the packaging area of ??the coil packaging operations. For more details, please call consultation. Shanghai Wo Yi Industrial Co., Ltd. supplies